public object[] GetToKeys(object fromKey)
{
var q = new Query(RelationSourceName, ComposeFromCondition(fromKey));
if (PositionFieldName != null)
{
q.Sort = new[] { PositionFieldName }
}
;
var tbl = DalcManager.LoadAll(q);
return(tbl.Rows.Cast <DataRow>().Select(r => r[ToFieldName]).ToArray());
}
}
public void Set(object fromKey, IEnumerable toKeys)
{
// load
var relationTbl = DalcManager.LoadAll(new Query(RelationSourceName, ComposeFromCondition(fromKey)));
var data = ExtraKeys == null ? new Dictionary <string, object>() : new Dictionary <string, object>(ExtraKeys);
data[FromFieldName] = fromKey;
int pos = 1;
foreach (var toKey in toKeys)
{
DataRow relationRow = relationTbl.Rows.Cast <DataRow>().Where(r => DalcRelationEditor.AreEqual(toKey, r[ToFieldName])).FirstOrDefault();
if (relationRow == null)
{
relationRow = relationTbl.NewRow();
relationRow[FromFieldName] = fromKey;
relationRow[ToFieldName] = toKey;
if (ExtraKeys != null)
{
foreach (var extraKeyEntry in ExtraKeys)
{
relationRow[extraKeyEntry.Key] = extraKeyEntry.Value;
}
}
relationTbl.Rows.Add(relationRow);
}
if (PositionFieldName != null)
{
relationRow[PositionFieldName] = pos++;
}
}
// delete missed relations
foreach (DataRow r in relationTbl.Rows)
{
if (!DalcRelationEditor.Contains(r[ToFieldName], toKeys))
{
r.Delete();
}
}
DalcManager.Update(relationTbl);
}
public void ProcessRequest(HttpContext context)
{
var Request = context.Request;
var Response = context.Response;
log.Write(LogEvent.Info, "Processing FlexBox ajax request: {0}", Request.Url.ToString());
var dalcName = Request["dalc"];
var relex = Request["relex"];
var validationCode = Request["validate"];
if (!ValidateRequest(validationCode, dalcName, relex))
{
log.Write(LogEvent.Error, "Validation failed for FlexBox ajax request: {0}", Request.Url.ToString());
throw new Exception("Invalid FlexBox ajax request");
}
var relexByServiceName = WebManager.GetService <object>(relex);
if (relexByServiceName != null)
{
relex = Convert.ToString(relexByServiceName);
}
var dalc = WebManager.GetService <IDalc>(dalcName);
var labelField = Request["label"];
var filterPrvName = Request["filter"];
var relexParser = new RelExQueryParser(false);
var exprResolver = WebManager.GetService <NI.Common.Expressions.IExpressionResolver>("defaultExprResolver");
var filterPrv = filterPrvName != null?WebManager.GetService <IProvider <IDictionary <string, object>, IDictionary <string, object> > >(filterPrvName) : null;
var qContext = new Hashtable();
// directly passed query parameters
foreach (string key in Request.Params.Keys)
{
if (key != null)
{
qContext[key] = Request.Params[key];
}
}
// legacy context format (left for compatibility)
if (Request["context"] != null)
{
var deserializedCtx = JsHelper.FromJsonString <IDictionary <string, object> >(Request["context"]);
foreach (var item in deserializedCtx)
{
qContext[item.Key] = JsHelper.FromJsonString(Convert.ToString(item.Value));
}
}
// actually used context
if (Request["context_json"] != null)
{
var deserializedCtx = JsHelper.FromJsonString <IDictionary <string, object> >(Request["context_json"]);
foreach (var item in deserializedCtx)
{
qContext[item.Key] = item.Value;
}
}
Query q = (Query)relexParser.Parse(Convert.ToString(exprResolver.Evaluate(qContext, relex)));
if (Request["action"] == "add" && Request["textfield"] != null && Request["valuefield"] != null)
{
var dbMgr = new DalcManager(dalc, WebManager.GetService <IDataSetProvider>("dsFactory"));
var newEntryRow = dbMgr.Create(q.SourceName);
newEntryRow[Request["textfield"]] = Request["value"];
dbMgr.Update(newEntryRow);
Response.Write(JsHelper.ToJsonString(new Dictionary <string, object>(ConvertManager.ChangeType <IDictionary <string, object> >(newEntryRow))));
}
else
{
if (Request["p"] != null && Request["s"] != null)
{
var pageSize = Convert.ToInt32(Request["s"]);
q.StartRecord = (Convert.ToInt32(Request["p"]) - 1) * pageSize;
q.RecordCount = pageSize;
}
var ds = new DataSet();
dalc.Load(ds, q);
var res = new Dictionary <string, object>();
var results = new List <IDictionary <string, object> >();
foreach (DataRow r in ds.Tables[q.SourceName].Rows)
{
IDictionary <string, object> data = new Dictionary <string, object>(new DataRowDictionaryWrapper(r));
// process label field (if specified)
if (!String.IsNullOrEmpty(labelField) && data.ContainsKey(labelField))
{
data[labelField] = WebManager.GetLabel(Convert.ToString(data[labelField]), typeof(FlexBoxAjaxHandler).FullName);
}
// prevent security hole
if (data.ContainsKey("password"))
{
data["password"] = null;
}
// filter
if (filterPrv != null)
{
data = filterPrv.Provide(data);
}
if (data != null)
{
results.Add(data);
}
}
res["total"] = dalc.RecordsCount(q.SourceName, q.Root);
res["results"] = results;
var json = new JavaScriptSerializer();
Response.Write(json.Serialize(res));
}
}
